Blender 4.2 lt possible bug?

Support Modeling
1

Hi friends!, Just to ask for feedback about something I find weird , as simple as you create a new project,then proceed to use ctrl-r and make 3 cuts on tree sides, top, left and right side of the default cube.

blender bug
blender bug3796×2053 1.05 MB

Then You select faces and then select extrude region on the left side panel and proceed to select two adjacent faces on the cube and this is what You expect:
blenderbug2
blenderbug23783×2047 1.05 MB

and it works that way for the most part, but there is one side where you obtain this result on a row of it´s faces instead:
blenderbug4
blenderbug43780×1794 1.05 MB

as You can see the handle appears upside instead diagonally making harder to extrude that way (diagonally).
Now, if You just take the cube and subdivide it with subdivision surface 2 and select simple and apply, the cube although looks identical than the manually subdivided , in this case You can select several adjacent faces and You will have not the issue mentioned.
I dont know , as I rarely use extrude region or extrude along normals, but it is interesting why blender is behaving that way. As a side note, I checked normals, and doubles.
Hope You can give some feedback, Thank You.

2

It should match the direction of the normals of the selection, so yeah, that’s a bug, just report it. I can replicate the issue on Windows, Blender 4.1.1, 4.2.3 and 4.3.0 RC

Something is wrong in the math. If you select all geometry in edit mode and move it slightly, it goes away. There must be some combination of coordinates or values stored that the algorithm fails with.

3

Thank You for the feedback, although I grabbed and moved with the arrows the entire mesh in edit mode and the issue persisted.

4

By entire mesh, you mean the mesh in edit mode, or the object in object mode? If you move the object, nothing changes about the mesh in object space. It seems to go away if I do it in edit mode. In any case, that probably doesn’t matter much. That’s a bug.

5

Yeah, I mean in edit mode, select all geometry vertex or faces, anyway as You said it is most definitely a bug, Thank You very much.

6

I mean if you were looking for a solution, you can just use the extrude operator instead of the tool. That works fine. Just change transform orientation to Normal and E works exactly the same.

Oh no, it doesn’t! That’s buggy as well at least in 4.3.0

7

“Well, I tried double E, and it worked fine.” NOP it did not!, sorry

8

It’s the same thing - it mostly works but sometimes doesn’t. I only tested it a few times before commenting and it worked then, but it sometimes doesn’t.

normalBug

4.2.3 as well as 4.3.0

9

Yep. same with Me, sometimes works other times it fails on several rows. Thank You.

10

Are you reporting it?

11

I Don´t know how to do it.

12

I can report if you don’t. It’s just in the help menu though:

image

Should I?

1 Like
13

Yep report it friend, please.

14

Reported Let’s see what happens.

2 Likes
15

Thanks! Hope it gets solved.

1 Like
16

Oh, but it’s also broken in 3.6… It’s an old one… :smiley: Seems like a major bug… I am starting to suspect it might be reported already and I am just failing to find it. :confused: